[INFO] fetching crate vial 0.1.1...
[INFO] checking vial-0.1.1 against beta-2020-07-24 for pr-75494-beta
[INFO] extracting crate vial 0.1.1 into /workspace/builds/worker-8/source
[INFO] validating manifest of crates.io crate vial 0.1.1 on toolchain beta-2020-07-24
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2020-07-24" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking crates.io crate vial 0.1.1
[INFO] removed 3 missing examples
[INFO] finished tweaking crates.io crate vial 0.1.1
[INFO] tweaked toml for crates.io crate vial 0.1.1 written to /workspace/builds/worker-8/source/Cargo.toml
[INFO] crate crates.io crate vial 0.1.1 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2020-07-24" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "rustops/crates-build-env@sha256:a636fd89d022f18117e1dc8fb37a0a009933cdbbe082814857f0e2024962d47c" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2020-07-24" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 13cd486771e82345e5a10dabbac50d1de890e5a8cfdb1dd288a91c65993e5ebb
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "13cd486771e82345e5a10dabbac50d1de890e5a8cfdb1dd288a91c65993e5ebb", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "13cd486771e82345e5a10dabbac50d1de890e5a8cfdb1dd288a91c65993e5ebb", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "13cd486771e82345e5a10dabbac50d1de890e5a8cfdb1dd288a91c65993e5ebb", kill_on_drop: false }`
[INFO] [stdout] 13cd486771e82345e5a10dabbac50d1de890e5a8cfdb1dd288a91c65993e5ebb
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "rustops/crates-build-env@sha256:a636fd89d022f18117e1dc8fb37a0a009933cdbbe082814857f0e2024962d47c" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2020-07-24" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 19dcdc43d9e0c549c7c86037c8da0bac7197abd174831514dc4120bdbab0330a
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "19dcdc43d9e0c549c7c86037c8da0bac7197abd174831514dc4120bdbab0330a", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.70
[INFO] [stderr]    Compiling vial v0.1.1 (/opt/rustwide/workdir)
[INFO] [stderr]     Checking percent-encoding v2.1.0
[INFO] [stderr]     Checking num_cpus v1.13.0
[INFO] [stderr]     Checking libc-strftime v0.2.0
[INFO] [stderr]     Checking threadpool v1.8.1
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 4.70s
[INFO] running `Command { std: "docker" "inspect" "19dcdc43d9e0c549c7c86037c8da0bac7197abd174831514dc4120bdbab0330a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "19dcdc43d9e0c549c7c86037c8da0bac7197abd174831514dc4120bdbab0330a", kill_on_drop: false }`
[INFO] [stdout] 19dcdc43d9e0c549c7c86037c8da0bac7197abd174831514dc4120bdbab0330a
